Product DescriptionHear less noise and more of your music with acclaimed QuietComfort 2 headphones. Dramatically reduce engine roar on planes with advanced noise reduction technology pioneered by Bose. Fade background distractions at work and at home too.Additional Bose innovations help your music come alive with well-balanced, detailed sound. All from a lightweight design, ergonomically crafted for a comfortable, around-ear fit.Hear the difference Bose technology makes QC®2 headphones' proprietary Acoustic Noise Cancelling headphone technology is the result of decades of Bose research and refinement. These award-winning headphones electronically identify and dramatically reduce noise--while preserving the sound or tranquility you desire.They also feature proprietary signal processing and TriPort® acoustic headphone structure for quality audio performance--including deep low notes--from small, lightweight earcups.For travel, work and home QC headphones were originally designed for airplane travel, and you'll notice a dramatic decrease in engine noise when you fly. Simply connect them to the inflight entertainment system or your portable player to hear quality Bose sound.Wear QC2 headphones on buses, trains, in the office and at home. You should notice a decrease in background noise--and sparkling audio reproduction. Pair QC2 headphones with most music-enabled phones too, using our optional mobile communications kit.Comfortable and convenient At just under seven ounces, QC2 headphones have a lightweight fit for hours of enjoyable listening. They gently surround your ears with a proprietary, soft-cushion design. And when you're on the move, they fold flat for convenient storage in a slim carrying case.What's in the box -QC®2 headphones -5' detachable audio cable -5' extension cord -1/4" stereo plug adapter -Dual-plug adapter -AAA battery -Carrying case -Owner's Guide